Marketable Securities Marketable Securities (Tables)

3 Months Ended

Mar. 31, 2013

Investments, Debt and Equity Securities [Abstract]

Components of marketable debt and equity securities

Our marketable debt and equity securities consisted of the following:

(In thousands)	March 31, 2013		December 30, 2012
Short-term marketable securities
Marketable debt securities
U.S Treasury securities	$	209,320	$	124,831
Corporate debt securities	62,634		—
U.S. agency securities	55,461		—
Municipal securities	23,094		—
Commercial paper	9,735		9,989
Certificates of deposit	6,561		—
Total short-term marketable securities	$	366,805	$	134,820
Long-term marketable securities
Marketable debt securities
Corporate debt securities	$	111,473	$	—
U.S. agency securities	56,998		—
Municipal securities	19,301		—
Total	187,772		—
Marketable equity security
Available-for-sale security	3,069		4,444
Total long-term marketable securities	$	190,841	$	4,444